Pro forma Results (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Aug. 26, 2012	Aug. 28, 2011
Pro forma net sales	$ 3,366.8	$ 3,341.9
Pro forma net income	$ 250.9	$ 107.0
Pro forma net income from continuing operations per share-basic	$ 0.62	$ 0.26
Pro forma net income from continuing operations per share-diluted	$ 0.61	$ 0.26